As much as I try to research the features on the Convoy 2, I cannot get a direct answer to the question, "Is the speaker phone on the Convoy 2 full duplex, or only half duplex?" If the answer is "full duplex," I will buy it. If the answer is "only half duplex," I shall not buy it. Is there any way to get an honest answer to my question?

Why improve on a good thing?I just replaced a similar military spec phone for someone in our company that survived 3 years of major abuse in harsh conditions and only gave out after a 40,000 lb truck ran over it.